Zoogeography Taxonomy And Conservation Of West Virginia S Ohio River Floodplain Crayfishes Decapoda Cambaridae
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Zoogeography Taxonomy And Conservation Of West Virginia S Ohio River Floodplain Crayfishes Decapoda Cambaridae
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Author : Zachary J. Loughman
language : en
Publisher: PenSoft Publishers LTD
Release Date : 2011-01-06
Zoogeography Taxonomy And Conservation Of West Virginia S Ohio River Floodplain Crayfishes Decapoda Cambaridae written by Zachary J. Loughman and has been published by PenSoft Publishers LTD this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-06 with Science categories.
The crayfish fauna of West Virginia consists of 23 species and several undescribed taxa. Most survey efforts documenting this fauna have been conducted in lotic waterways throughout the Appalachian plateau, Allegheny Mountains, and Ridge and Valley physiographic provinces. Bottomland forests, swamps, and marshes associated with large river floodplains such as the Ohio River floodplain historically have been under-surveyed, though these habitats harbor the richest primary burrowing crayfish fauna in West Virginia. The crayfish fauna of West Virginia?s Ohio River floodplain was surveyed from 2004 through 2009.ÿ From this survey, nine species from four genera were documented inhabiting the floodplain. Zoogeography, biology, and conservation status is provided for the nine species encountered in the survey, as well as a review of crayfish collection methods and a dichotomous key to West Virginia Ohio River floodplain crayfish species.
A Global Overview Of The Conservation Of Freshwater Decapod Crustaceans
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Author : Tadashi Kawai
language : en
Publisher: Springer
Release Date : 2016-10-26
A Global Overview Of The Conservation Of Freshwater Decapod Crustaceans written by Tadashi Kawai and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-26 with Science categories.
This book introduces updated information on conservation issues, providing an overview of what is needed to advance the global conservation of freshwater decapods such as freshwater crabs, crayfish, and shrimps. Biodiversity loss in general is highest in organisms that depend on intact freshwater habitats, because freshwater ecosystems worldwide are suffering intense threats from multiple sources. Our understanding of the number and location of threatened species of decapods, and of the nature of their extinction threats has improved greatly in recent years, and has enabled the development of species conservation strategies. This volume focuses on saving threatened species from extinction, and emphasizes the importance of the successful implementation of conservation action plans through cooperation between scientists, conservationists, educators, funding agencies, policy makers, and conservation agencies.
Cave Biology
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Author : Aldemaro Romero Díaz
language : en
Publisher: Cambridge University Press
Release Date : 2009-07-23
Cave Biology written by Aldemaro Romero Díaz and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-23 with Nature categories.
A critical examination of current knowledge and ideas on cave biology, with emphasis on evolution, ecology, and conservation.
A Checklist Of The North And Middle American Crayfishes Decapoda
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Author : Horton Holcombe Hobbs
language : en
Publisher:
Release Date : 1974
A Checklist Of The North And Middle American Crayfishes Decapoda written by Horton Holcombe Hobbs and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Astacidae categories.
An Introduction To The Study Of Zoology Illustrated By The Crayfish
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Author : Thomas Henry Huxley
language : en
Publisher:
Release Date : 1895
An Introduction To The Study Of Zoology Illustrated By The Crayfish written by Thomas Henry Huxley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1895 with Crayfish categories.
The Biology Of Hypogean Fishes
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Author : Romero Aldemaro
language : en
Publisher: Springer Science & Business Media
Release Date : 2001-12-31
The Biology Of Hypogean Fishes written by Romero Aldemaro and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-12-31 with Science categories.
Hypogean (cave, artesian) fishes have fascinated researchers even before they were described in the scientific literature in 1842. Since then, a number of scientists have used them to justify their own evolutionary ideas, from neo-Lamarckism to neo-Darwinism, from neutral evolution to selectionist approaches. Research in recent years has shown that these fishes are much more complex in their adaptations to the subterranean environment than previously believed: there are those with features expected from living in total darkness (complete blindness and depigmentation) and poor in nutrients (extremely low metabolic rates); others differ very little, if any, from their epigean (surface) ancestors in their morphology and physiology (but not so in their behavior). Some of them even live in nutrient-rich environments. Actually, one of the most overlooked facets of these animals is that there are more species of hypogean fishes without troglomorphisms (blindness, depigmentation) than with troglomorphic ones. The study of these apparently `unadapted' fishes is providing new insights into our understanding of the evolution of phenotypic characters, founding effect, behavioral, and physiological adaptations. The 86 species of troglomorphic fishes described so far belong to 18 different families, many of which would hardly fit the notion that they were 'preadapted' to conquer the underground environment. Further, many troglomorphic `species' show very little genotypic differentiation when compared with their putative ancestors, indicating that massive phenotype changes can be achieved via little genetic reorganization, a reorganization that mostly affects regulatory genes. These and many other topics are discussed in this volume containing 29 papers, written by 41 authors from 9 countries. Hopefully, this volume will convince many other researchers that hypogean fishes represent a unique opportunity to study a concept in evolutionary biology that is only superficially understood: convergent evolution.
Rapid Bioassessment Protocols For Use In Wadeable Streams And Rivers
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Author : United States. Environmental Protection Agency. Office of Water
language : en
Publisher:
Release Date : 1999
Rapid Bioassessment Protocols For Use In Wadeable Streams And Rivers written by United States. Environmental Protection Agency. Office of Water and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Water quality bioassay categories.
Modulation Of Synaptic Transmission And Plasticity In Nervous Systems
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Author : Georg Hertting
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Modulation Of Synaptic Transmission And Plasticity In Nervous Systems written by Georg Hertting and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Medical categories.
This volume is based on a workshop "Modulation of Synaptic Transmission and Plasticity in Nervous Systems" held in n Ciocco, Castelvecchio, Pascoli, Italy, from September 8th to 13th, 1987. The purpose of the meeting was to bring together scientists working on plasticity in nervous systems on different levels. The contributions can be subgrouped into six fields of research: 1) Presynaptic Modulation of Chemical Neurotransmission 2) Postsynaptic Signal Transduction 3) Modulation of Synaptic Transmission and Plasticity in the Hippocampus 4) Modulation of Neuromuscular Transmission 5) Molecular and Cellular Analysis of Conditioning in Marine Snails 6) Analysis of Learning and Memory in Insects Understanding how nervous systems and in particular our brain processes and stores information has been a major challenge in science for centuries and will remain for some time to come. Not until recently neurobiologists agreed to seek plasticity of behavior primarily in the modulation of the properties of synapses between nerve cells. This is to be understood within the context provided by a neural circuitry. An important stimulus came from the work on the marine snail Aplysia, where learning processes can be described as a modulation of transmitter release, traced back to a complete chain of molecular events in an identified neuron. Learning became a topic of molecular biology. Three systems appear particularly promising for this approach: insects, in particular Drosophila, marine snails and the mammalian hippocampal tissue. Our views on neurotransmission have rapidly changed.
Environmental Setting And Its Relations To Water Quality In The Kanawha River Basin
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Author : Terence Messinger
language : en
Publisher:
Release Date : 2000
Environmental Setting And Its Relations To Water Quality In The Kanawha River Basin written by Terence Messinger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Kanawha River (W. Va.) categories.
Mammoth Cave
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Author : Horton H. Hobbs III
language : en
Publisher: Springer
Release Date : 2017-06-14
Mammoth Cave written by Horton H. Hobbs III and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-14 with Science categories.
This book reveals the science and beauty of Mammoth Cave, the world's longest cave, which has played an important role in the natural sciences. It offers a comprehensive and interdisciplinary treatment of the cave, combining insights from leading experts in fields ranging from archeology and cultural history to life science and geosciences. The first animals specialized for cave life in North America, including beetles, spiders, crayfish, and fish, were discovered in Mammoth Cave in the 1840s. It has also been used and explored by humans, including Native Americans, who mined its sulfate minerals and later African-American slaves, who made a map of the cave. More recent stories include 'wars' between commercial cave owners, epic exploration trips by modern cave explorers, and of course tourism. The first section of the book is an extensive description including maps and photos of the cave, its basic structural pattern, and how it relates to the surface landscape. The second section covers the human history of utilization and exploration of the cave, including mining, tourism, and medical experiments. Cave science is the topic of the third section, including geology, hydrology, mineralogy, climatology, paleontology, ecology, biodiversity, and microbiology. The fourth section looks to the future, with an overview of environmental issues facing Mammoth Cave managers. The book is intended for anyone interested in caves in general and Mammoth Cave in particular, experts in one discipline seeking information about other areas, and researchers and students interested in the many avenues of pursuit possible in Mammoth Cave.